How to exclude files in torrent from download?

Yes, it is posible.

Open transmision ->Click on the torrent you wish to edit -> Afther you click, you have on transmision top bar a button called Properties click on it.

A new windows should appear On that windows you have a tab called Files click on it In this tab you should see some checkboxes, if you cannot see the ckeckboxes,resize the windows and make it bigger.

If downloading from a magnet URL:

Leave it to download the metadata:

Once it's done with the metadata and says "Downloading from peers":

Right click the torrent → Properties → Files tab

Deselect what you don't want it to download.

If downloading from a .torrent file:

You should find the selection as soon as you add the .torrent file, before starting the download.

In Transmission, right-click on the torrent and click Properties.

In the torrent's properties dialog, click the Files tab.

You can uncheck files in the Downloads column.

• If the torrent has a folder structure, you can check and uncheck whole folders too.
• If some but not all files appear, perhaps the torrent has a folder structure and not all folders are expanded. You can expand them with the + icon to the left of the folder name.
• If not files appear at all, you probably added the torrent via magnet link and it hasn't retrieved any tracking information yet. Tracking information has to be received in order for any data transfer between you and other peers, so once anything begins downloading, the files will appear and can be unchecked.